double seal manhole cover

英 [double seal manhole cover]
美 [double seal manhole cover]

中文释义

人孔复式封盖

单词分析

单词结构：

double seal manhole cover

字母数：25

记忆提示

🎯 重点记忆：

  • 单词拼写：double seal manhole cover
  • 核心含义：人孔复式封盖

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更新时间：2025-12-09 20:24:45